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Cortical mechanisms for afterimage formation: evidence from interocular grouping
Dong, Bo1,2; Holm, Linus3; Bao, Min1
2017-01-23
发表期刊SCIENTIFIC REPORTS
通讯作者邮箱baom@psych.ac.cn
ISSN2045-2322
文章类型Article
卷号7期号:0页码:41101
摘要

Whether the retinal process alone or retinal and cortical processes jointly determine afterimage (AI) formation has long been debated. Based on the retinal rebound responses, recent work proposes that afterimage signals are exclusively generated in the retina, although later modified by cortical mechanisms. We tested this notion with the method of "indirect proof". Each eye was presented with a 2-by-2 checkerboard of horizontal and vertical grating patches. Each corresponding patch of the two checkerboards was perpendicular to each other, which produces binocular rivalry, and can generate percepts ranging from complete interocular grouping to either monocular pattern. The monocular percepts became more frequent with higher contrast. Due to adaptation, the visual system is less sensitive during the AIs than during the inductions with AI-similar contrast. If the retina is the only origin of AIs, comparable contrast appearance would require stronger retinal signals in the AIs than in the inductions, thus leading to more frequent monocular percepts in the AIs than in the inductions. Surprisingly, subjects saw the fully coherent stripes significantly more often in AIs. Our results thus contradict the retinal generation notion, and suggest that in addition to the retina, cortex is directly involved in the generation of AI signals.

DOI10.1038/srep41101
收录类别SCI
语种英语
项目资助者Key Research Program of the Chinese Academy of Sciences(KSZD-EW-TZ-003) ; National Natural Science Foundation of China(31371030 ; 31571112)
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000392418700001
WOS标题词Science & Technology
关键词[WOS]BINOCULAR-RIVALRY ; NEGATIVE AFTERIMAGES ; PERCEIVED CONTRAST ; STRIATE CORTEX ; VISUAL-CORTEX ; ADAPTATION ; ATTENTION ; MICROSACCADES ; MONKEY ; NEURONS
引用统计
文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/21142
专题中国科学院行为科学重点实验室
通讯作者Bao, Min
作者单位1.Chinese Acad Sci, Inst Psychol, Key Lab Behav Sci, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100101, Peoples R China
3.Umea Univ, Dept Psychol, S-90187 Umea, Sweden
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GB/T 7714
Dong, Bo,Holm, Linus,Bao, Min. Cortical mechanisms for afterimage formation: evidence from interocular grouping[J]. SCIENTIFIC REPORTS,2017,7(0):41101.
APA Dong, Bo,Holm, Linus,&Bao, Min.(2017).Cortical mechanisms for afterimage formation: evidence from interocular grouping.SCIENTIFIC REPORTS,7(0),41101.
MLA Dong, Bo,et al."Cortical mechanisms for afterimage formation: evidence from interocular grouping".SCIENTIFIC REPORTS 7.0(2017):41101.
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